Refrigeration – Refrigeration producer – Compressor-condenser-evaporator circuit
Patent
1980-02-04
1981-06-16
Capossela, Ronald C.
Refrigeration
Refrigeration producer
Compressor-condenser-evaporator circuit
62509, 62513, 62527, F25B 4106
Patent
active
042729700
ABSTRACT:
A compression refrigeration system having a compressor, a condenser, an evaporator, and a liquid refrigerant in which a capillary tube is positioned within an enclosure. The liquid refrigerant from the condenser is connected to the enclosure inlet and then flows to the inlet of the capillary tube and out of the capillary tube to the evaporator, whereby the refrigerant in the enclosure forms a heat exchange relationship with the exterior of the capillary tube for providing a self-regulating flow through the capillary tube. Improved charging of the system is provided by positioning the inlet to the capillary tube above the bottom of the enclosure and providing a refrigeration adding valve to the enclosure to insure that the enclosure is filled to a predetermined level in order to enter the capillary tube. Preferably, a reserve of liquid refrigerant is inserted into the enclosure above the capillary inlet for compensating for variations in density of the refrigerant. Preferably, the outlet of the capillary tube is positioned above the inlet to the capillary tube to aid in charging of the system in the field by allowing the enclosure to be filled with the proper amount of refrigerant by tilting the enclosure to a proper angle in accordance with the operating variables while filling the enclosure with refrigerant. Preferably, it is desired that the capillary inlet be at the top of the capillary coil and the capillary outlet be above the capillary inlet.
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